Broadcom B43 WiFi not working in Ubuntu 14.04 LTS

Question

I have installed Ubuntu 14.04 LTS on my laptop.

Under the networking menu at the top, it is not showing any WiFi options.

How can I get Wifi working in Ubuntu 14.04 LTS?

I have a Broadcom BCM4311 WLAN card.

Please edit your question with the kind of wireless card you have: http://askubuntu.com/questions/14008/i-have-a-hardware-detection-problem-what-logs-do-i-need-to-look-into — Jorge Castro, Apr 19 '14 at 15:27
Please do what is in the accepted answer in the link below so we may see the information needed to help diagnose the issue. http://askubuntu.com/questions/425155/my-wireless-wifi-connection-does-not-work-what-can-i-do — Wild Man, Apr 19 '14 at 20:49
Look at this question. If it doesn't work, [edit] with detailed explanation of what happened in your case, also incorporate all the information that was asked in earlier comments. — Aditya, Apr 20 '14 at 17:41
Problem solved until reboot, and go back after reboot, here result for 'iwconfig' command line: wlan0 IEEE 802.11bgn ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=19 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off — , Apr 30 '14 at 14:14
Just Suspend the system and then resume back in. This surprisingly solves the wifi issue! Worked for me [ubuntu 14.04 LTS x64 on Asus laptop] — Nagendra Rao, Jul 23 '14 at 14:54

score 15 · Accepted Answer · edited Mar 12 '18 at 00:58

15

For Broadcom BCM4311,

sudo apt-get purge bcmwl-kernel-source broadcom-sta-common broadcom-sta-source broadcom-sta-dkms

sudo apt-get install b43-fwcutter firmware-b43-installer

See here https://help.ubuntu.com/community/BroadcomSTA(Wireless)

edited Mar 12 '18 at 00:58

Jan Molnár

115

answered Apr 23 '14 at 07:39

Harsh Vakharia

349
2
6

That worked like a charm :) – user3551525 Apr 23 '14 at 08:09
My son's laptop finally worked with this. – Juanin Jul 22 '14 at 11:46
When the WiFi stopped working for some reason reinstalling the b43 packages did the trick for me: sudo apt-get install --reinstall b43-fwcutter firmware-b43-installer. – rkallensee Dec 05 '14 at 23:20
didn't work for me... bcm4311 on 14.04, still cant connect to wifi network – gap May 31 '15 at 00:24
it showing me firmware-b43-installer is already the newest version. but still not showing WiFi option. I'm using 14.04 version. ANy suggestion? – CoDe Jan 19 '16 at 06:31
wordked in ubuntu 14.04.03 in pavilion dm1 br version, thanks – h3nr1ke Feb 13 '16 at 20:21
I have BCM4360 on Ubuntu 14.04 and firmware-b43-installer stopped me from even being able to connect to ethernet. I needed to remove it (via synaptic package manager) to connect to ethernet again. Install with care! – jaryaman Feb 24 '18 at 10:38

score 2 · Answer 2 · answered Jul 09 '14 at 07:08

2

you can go to

settings> Software and updates > additional drivers

you can get most of wireless/Graphics drivers. You can install any 3rd party driver software you require. Hope that helps!

answered Jul 09 '14 at 07:08

Ankit Singhaniya

582

1

this helped. open source driver was choosen, but this only works with proprietary. after choosing proprietary driver in this dialog, wifi worked again. thanks – emirc Aug 16 '14 at 22:22

score 1 · Answer 3 · edited Apr 19 '14 at 23:40

1

If you're using a Broadcom (BCM43xx) wireless network card like me, this might help.

I connected the laptop using a cable and ran:

sudo apt-get install firmware-b43-installer

to install the driver and then rebooted.

(It would be helpful to add your network card to the question.)

edited Apr 19 '14 at 23:40

Seth

58,122

answered Apr 19 '14 at 15:04

user3371321

191
1
7

scozv · Answer 4 · 2017-08-04T23:19:57.043

0

Maybe you faced a problem like me Network indicator disappeared.

A solution that works for me is here:

http://www.webupd8.org/2014/04/fix-lubuntu-1404-network-manager.html

Simply speaking, try nm-applet at first, if you take back WiFi indicator, then add nm-applet to Default applications for LXSession.

edited Aug 04 '17 at 23:19

answered Apr 19 '14 at 14:23

scozv

480
2
5
11

@scoze the link is broken – Abdul Hameed Aug 03 '17 at 13:51
@AbdulHameed sorry, I fixed the link, try again – scozv Aug 04 '17 at 23:20

Broadcom B43 WiFi not working in Ubuntu 14.04 LTS

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